The DLGAP5 knockout A-549 polyclonal cells are a CRISPR/Cas9-mediated gene disruption population derived from the A-549 human lung adenocarcinoma cell line. This polyclonal knockout model introduces a loss-of-function for the DLGAP5 gene, enabling the study of its roles in mitotic regulation and cancer biology without clonal selection effects.
The A-549 cell line, isolated from a 58-year-old Caucasian male with lung carcinoma, exhibits adherent epithelial morphology and serves as a well-characterized model of human alveolar type II epithelium. It is extensively applied in lung cancer research, respiratory infection studies, and drug development, providing a robust background for CRISPR-based gene editing and downstream functional assays.
DLGAP5 encodes a microtubule-associated protein essential for mitotic spindle assembly and chromosome alignment. It is phosphorylated by Aurora A kinase and forms a complex with TPX2 to stabilize spindle microtubules, promoting bipolar spindle formation. Transcription of DLGAP5 is activated by FOXM1 and the ??-catenin/TCF complex, integrating signals from Wnt/??-catenin and mitotic kinase pathways. DLGAP5 regulates Aurora A activity and microtubule dynamics, and its overexpression is associated with chromosome instability and tumor progression across multiple cancer types.
In A-549 lung adenocarcinoma cells, DLGAP5 knockout provides a direct tool to investigate how disruption of mitotic spindle regulation affects cancer cell behavior. Given the prognostic significance of DLGAP5 overexpression in lung adenocarcinoma, this model permits examination of cell cycle arrest, mitotic catastrophe, and altered sensitivity to microtubule-targeting agents. The epithelial origin and cancer-associated mutations of A-549 cells offer a relevant context for evaluating the tumor-suppressive consequences of DLGAP5 loss.
These polyclonal knockout cells support a broad range of experimental applications. Western blotting for Aurora A phosphorylation, immunofluorescence for spindle morphology, and live-cell imaging of mitosis enable detailed mitotic analysis. Cell cycle synchronization and flow cytometry quantify distribution changes, while colony formation and xenograft assays assess proliferation and tumorigenicity. RT-qPCR profiling of mitotic genes further characterizes transcriptional responses. Together, these approaches facilitate cancer cell proliferation studies, mitotic spindle assembly analysis, cell cycle regulation research, and validation of antimitotic drug targets. For additional information, please contact Ascent Research.
